Jet-lift for wells.



D. KEMBLE.

lET LIFT FOR WELLS.

APPLICATION man uEc.26. 191s.

UNITED sTATEs PATENT oEFicE,

' Ims'ron KEMBLE, or LIsnoN, omo.

JETL11-T non WELLS.

To all whom it may Concern:

Be it known that I, DUsToN KEMBLE, citizen of the United States, residing at Lisbon, in the county of Columbiana and State of Ohio, have invented certain-new and usefu Improvements in Jet-Lifts for Wells, of which the following is a specification.

My invention pertains to an improvement in jet lifts for wells, the object being to provide a device having a centralsuctional inlet area and an annular cone-shaped operating jet nozzle or ejector which is adapted to raise the fluid in a pipe well where the normal level of the fluid is too low or too near the bottom for satisfactory operation of an air lift.

A further feature of the invention resides in utilizing a single centrally-located jety nozzle and suction inlet in t-he lower portion of the lift apparatus without using the annular space between the inner pipe and the casing for the downflow of the operating current, which arrangement permits the inner pipe to be of less diameter and weight and expense than if it were'used forthe uptlow of both jet and suction output. A still further object of the invention is in providing a suction inlet into the centerl of the operating jet instead of placing it outside of the jet; as this arrangement not only gives a compact' form of the suction area, which is small at great depths, but also reduces the flow friction loss to a minimum in both jet and suction streams, and at the same time alt'ordsthe best lift of the liquid by atmospheric pressure into a cone-shaped spa ce from which it is drawn upward by the jet at an accelerating velocity until the two are made one stream in the throat of the ejector nozzle. Another object is embodied in means whereby the casing foot is protected, and the ball-valve is drawn out with the inner pipe when the latter is lifted from the well, and also whereby the liquid in one `or both long pipes maybe drained olf without being lifted when the inner pipe is lifted.

In the accompanying drawings, Figure 1 is a sectional View longitudinally of my im proved apparatus, the upper and lower portions of the pipes being broken away. Fig. 2 is a similar' View to Fig. 1 but at right angles thereto. y

Figs. 3 and et are transverse sections of the apparatus on lines 3-3, Fig. 1, and 14C-J1, Fig. 2, respectively.

Speciilcation of Letters Patent.

Patented Mar. 5, 191s.

Application filed December 26,1916. Serial No. 138,105.

The apparatus consists Yof a large pipe 2 having a pipe 3 of smaller diameter sleeved therein with an ample sized annular space 4 between the respective -walls of said pipes, and the outer pipe 2 is provided with a removable cap 5 at its lower end through which an intake tube 6 is adapted to reject `to a well-point (not shown). The ottom surface of cap 5 is of irregular curvature and relatively heavy and the inner pipe 3 is provided with an enlarged foot 7 in screw engagement therewith and with the intake tube 6.. Foot 7 rests upon cap 5 and a circular packing of rubber, or other suitable material occupies a groove in the bottom of the head to prevent leakage, and the outer surface of foot 7 is channeled longitudinally to provide fluid passages open to the outer space 4 and the space beneath the bottom' of the foot, and a flaring valve seat 8'is formed centrally insaid bottom opposite the end of the intake tube 6. Foot 7 is also provided with two down-flow channels 9 internally oi. less length than the head and the respective ends of these channels are curved inwardly and register with openings 10 and 11 at `different elevations in the pipe 3. However, a throat member 12 is removably screwed within pipe 3 which closes the main passage in pipe 3 between the upper and' lower sets of openings, the said member terminatingI above the lower openings 1l and having outwardly-curved luy-passes 13 at its upper end adapted to register with the upper openings 10, in this way producing a divided How for the :Huid which passes downwardly through pipe 3 and which issues into the converging' throat 14 een trally at the bottom of member 12. Throat la is contracted to its greatest extent at a point about mid-length ,of .said member where it begins to Hare outwardly and merges finally with two oppositely-disposed curved ducts-15 arranged in the same vertical plane but at right angles to the oppositely disposed down-flow channels 9 in foot 7. Openings 16 in inner pipe 3 register with the outlet ends of ducts 15 to permit the fluid to escape into the annular' space '4 above head 7 The direction of flow Y of the operating'iluid under pressure is downwardly through inner pipe 3, thence through by-passages 13 into the down-How channels 9, and thence upwardlyV through the throat 14 and ducts 15 into space 4,'and

suitable 4provision is mader at thek top of vv:a

' nin pressure in the with suflicient liquid at a effected as said element is made as a sep' arate piece and is screw-engaged withI inner pipe, and lwhen the parts are assembled lthe suction opening is Centrally related, to throat 11i and an annular space 18 of greater or lesser area provided within the throataround the mouth of said suction nozzle. This annular space may also be' referred to as thejet area.

The bottom portion of the suction nozzle isopen and'flares outwardly to the screwthreaded outer surface-thereof, and a series of radial ribs 19 extend inwardly from the flaring surface to check the ball valve 2O from excessive upward movement and prevent closure of the' passage under an induced iow' of the liquidA passing through the valve seat.

In operation, the operating pressure in the jet is far greaterthan the possible vacusuction channel, special provision being made inthe form or shape of the latter to allow room for asufticient quantity of liquid to enter 'the suction area under low or atmosphericpressure to'sup-l ply a contracted portion of the channel for 'aigiven ratio of output to the quantity of liquid flowing in the jet. This principle must be observed in calculating the design or layout for any given output with a given height of lift, since otherwise the liquid will not enter the suction area by atmos pheric pressure fast enough to keep up with l Ythe normal work of the operating jet, and

the result will be a partial vacuum that must interfere seriously with the operating efficiency. However, where the design is properly laid out, the current issuing from `the suction inlet. is surroundedV by a rather wide annular jet area 18 just inside of the common channel, and the outer portion of liquid in this lower part of the cone-shaped space over the suction inlet is caught up and thrown bythe jet through the contracted outlet or throat 14 with high velocity, while newi liquid comes in at lower velocity through the suction inlet. The preferred plan is to arrange the twin down-flow .channels for the jet outside of the inner pipe,-

butthese may be arranged straight down on the inside of the inner pipe instead of being carried outside, as shown in the drawings.- A reverse relation of the suction in- Of cuidas utilized t@ na andl higher velocity let and operating jet may also be adopted,

that is, the operating jet .may be centrally disposed within an annular suction inlet communicating with pipe 6, but the-arrangement shown is preferred.

What I claim is:

1. In a jet-lift for wells, a doublecham beredv well casing having cross-communicating passages between the chambers provided with' a contracted throat and an annulail jet space centrally opposite said throat-and having a valved intake at its bottom and a suction inlet centrally of said annular jet space. r

2. In ajet lift for wells, inner and outer pipes and a t-hroat member and suction inlet member for the inner pipe and channels leading upward from said inlet member in the inner pipe, and an intake member at the bottom of said pipes.

3. In a jet lift for wells, a set of pipes in spaced sleeved the bottom end thereof and provided with an intake, a cross-channeled member within the inner pipe with one pair of channels insopen communication with the space between the pipes, and an inlet member centrally located between said intake and channeled member.

d. In a jet lift in spaced sleeved relations having a communicating channel and a pair of crossed channels above and below the central channel set substantially at right angies with eachother therebetween, and an `inlet meme ber adjustably mounted relatively to said communicating channel.'

5. In ajet lift for wells, a set of pi es in spaced sleeved relation havingcrosse -communicating channels with a contracted throat centrally of said pipes, and a suction inlet member of nozzle form adjustably mounted within said inner pipe centrally .opposite said throat.

6. In a jet lift for wells, a plurality of pipes in spaced sleeved relation having a relation having a cap atv for wells, a set of pipes,

viio

cap and an intake extension at correspond-v 7. In a jet lift for wells, a pair of pipes of different diameters united in spaced sleeved relation, a. cap for the outer pipe and an intake member extending therefrom, a head for the inner pipe adapted to bearl against said cap, a throat member within the inner pipe having crossed communicating channels opening\at their respective ends vinto the said inner and outer pipes, and

a suction inlet member in theform of a nozsaid intake,

. zle 'arranged centrally -connection for the inner pipe extending through said cap, a suction .nozzle opposite for the inner pipe having channels therein in open communication at -their opposite ends with the interior of said inner -and outer pipes, respectively, and having a contracted throat of bellsl1ape surrinifndingl said suction nozzle.

9. In a of different diameter in spaced' sleeved re lation, a cap and intake extension for said opposite the said pipes, a foot aiiixed to the and a' throat member and foot jet lift :for wells., a -pair of pipesl inner pipe in slidable engageinent'with the outer pipe, a throat member secured Within Said inner pipe, said foot and throat member having Signed at Lisbon, in the county channels Withdiverging passages at their respectlve ends 1n open eommumcationwith of Col luirnbiana and State of Oliio,lth1s eighth,

day of December, 1916.

` DUs'roN KEMBLE. r 

